Black Steel Pipes
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Standard: ASTM A53A53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless Grade£ºA and B Type: Electric Resistance Welded(ERW) Size: NPS 1 TO NPS 24 [DN25 to DN 600], with nominal£¨average£©wall thickness as given in ASME B 36.10M or as customer¡¯s requirement. Outer Diameter: 1-24 inches( 33.4¡ª609.6mm) Thickness: 3-12mm
